Milking apparatus



May 4,1926. 1,583,580

' L. DINESEN KILKING APPARATUS Filed June 6, 1921 5 Sheets-Sheet 1 May 4 1926. 1,583,580

L. DINESEN MILKING APPARATUS Filed June a. 1921 s' Sheets-Sheet 2 7 W0 j fhzlsfliiarweys WMVQM May 4 1926. 7 1,583,580

L. DINESEN MILKING APPARATUS Filed June 6, 1921 5 Sheets-Sheet 5 Mgy 4 1926.

L. DINESEN MILKING APPARATUS Ei1e d June 6, 1921 i i I 3 4.

5 Sheets-Sheet 4 Patented May 4, 1926.

mums D'fiv'ESEN', e1 "MINNEAPOLIS, MmNEsoTA mnmive memes.

-Be it known that L LAURI IS DIEESEN, -a citizen of the United States, 'iesiclmg at lf/Iinneapolis, in the county of l lennepin mil fita'te ot lalinnesot have invented e" tang i e w end useful I mprevements in Mll'kmg 1\p'pa1atus and I 'c lo'li'e'reby deelare the fol .lowin t be a ful'lgelemgend exac tdesenp tion (if the invention, "si dhas Will enable others slailled i'n the, afit to "Winoh it afp'pertain's to make and use the 'sfafrie. A I I -My present, ihvelitioii, fielttes to milkin'g epipei-atus and is in the -neettire of 'pi-o 'v'enienten oi refinement o'f {the li ii lki-ng apparatus eliselosetl end =br oadly' claimed Gen-eral ly stated, the iiweiitifon jeo'nsiste of the novel devices 'a iic'l combinations of devibes, hereinafter described and lefifi'ed the Claims.

The Vznious novel features oit the present invention will appear :in conn ction with the description of the ccom n ing drawings,

which illustimte a commercial, operative em- I t'vo mlik'tubes, as ShO'ilvn, 'lTe COIfiTQOtCl at bodiment of the resent invention.

Referring to said flmwi'n'gs, wherein "like 'oha'i'ac'ters i l i-c l'icate like parts throw-ghee; the

several views, I r V v Fig. l is a plan view illustrating the a 1- parat'us and showing what nmy beftrea ted as a one-unit or ra t-h er a Sort ofiolou'b'le-unitapparz tus consisting of. one milk pail 0 i iece'p tzrcle, two groups of teat eu'p'e and a pulsetoi on the pail cover having ceiinee'tions to both groups of tea t cju'ps;-

Fig. 2 is &1] enlargedvertical sectioe t-a'lg'en approximately on the *li'n'e 2 26f F L, somepzirts being tt -il'l;- 1 7 Fig. is "section ohthe line Fig. is a section 011 tlie li ne Fig. 5 is an enlarged section; taken approximately on the line 5*5 of Fig. 1, some parts being in full; I v

Fig. 6 is a h'o rizo i ital seetio taken a proximately on the line f6=6bf Fig. 5-, seine parts being broken away anti some parts be ing remo'x ecl'; I

F 7 is an enlarged Ve'ft ic-a-l seet'io-litake'i appi'oxin i'ately on. the li11e=7 7 of" Fig. l,'

some parts being shown full;

Fig. 6 is a horizontal section on theh'ne 8; -8.e;tF g. 7.; r I Efigf? is a. e-levetleii'eif the glue tieted in Fig". 7 Bu't "the air tiiloe coupler, milk tube eoiipler *ahd eep drawn l lfiiis a. -lior-i'zontal fs'ectioii telaen iipiifoxiii titely on the irregular lih'e oe-pte'c'le by a mite delivery" tube These,

The central or ,teat "eh ainbef ofthe eu'pj is pro Med with" a lei()j'ec ting 23;

ta'ched bra eh air tfibs 26.

air tube or rubber hose that leads from the pulsator presently to be described and is connected to the main nipple 28 of the air tube coupler head 27.

The milk tube coupler head 31 is of substantially annular form, and is provided with a main nipple 32 and with four branch nipples 33. The branch milk tubes 24 are applied to the respective branch nipples .33, while the outer end of the corresponding main milk tube 16 is applied to the main nipple 32.

The milk tube coupler head 31 being, as stated, annular in form, is capable of being easily cleaned when separated from the air tube coupler head 27. To form a bottom for said milk tube coupler head, the air tube coupler head 27 is formed with a disk-like top flange 35 having araisedcentral portion 35 that is adapted to be telescoped into the bottom opening of said milk tube coupler head 31.

v To, close the top of said milk tube coupler head 31, I provide a cap 36 having a threaded stem 37 arranged for threaded engagement with a threaded axial hole in the raised botto1n-forming portion 35 of the air tube coupler head 27. When the stem of the cap 36 is screwed into the head 27, as best shown in Fig. 7, the two coupler heads will be securely clamped together and the annular milk tube coupler head will, of course, be closed at top and bottom. To insure alignment of the nipples 32 and 28, one over the other, the annular head 27 is shown as provided with a dowel pin 38 that engages a seat in the head 31. The head 27 is shown as provided with a ring 39. V

The pulsator mechanism, which involves novel features, per se, and in its association with other elements, is preferably mounted directly on the pail cover 14. As illustrated, it comprises a horizontal cylinder 40 provided with a depending intermediate pedestal 41, which, by screws or other means, is

rigidly secured to a base plate 42. The pedestal 41 is formedwith a large inner chamber 43 that opens through the base plate 42. A pliable packing plate 44, preferably of rubher, is interposed'between the base plate 42 and the top of the pail cover 14. At dia- -metrically opposite points, (see Figs. 2 and 11), the base plate 42 is formed with large perforations having contracted extensions 45. Threaded studs 46 are rigidly secured to the pail cover '14 and are provided with thumb nuts 47. These studs 46 extend through the pliable packing plate 44 and through the perforations 45. WVhen the cylinder structure is turned so that the perforations 45 are aligned with the nuts 47, said cylinder structure may be liftedfrom position or applied in..working position, but when thecylinder structure is turned so that th s uds 46 re the c n racted P r i ns 45 of said perforations, and the nuts are then tightened, the cylinder structure will be securely fastened or anchored in working position on the pail cover.

The numeral 50 indicates a rigid bail-like handle secured to the pail cover 14 and, as shown, embracing the cylinder structure.

The pulsator cylinder 40, (see Figs. 5 and 6), is formed with a central port 51 that leads downward into the basechamber 43 and is connected to a main suction nipple 52, which latter, by a flexible tube 53, is connected to a vacuum tank or other source of partial vacuum or suction. The cylinder base is also provided with a central depending port 54, the lower end of which is plugged butwhich is in constant communication with laterally projecting air nipples 55, to which the air suction tubes 30 are connected, as best shown in Fig. 1. In the same cross section as theports 51 and 54 the cylinder 40 is provided with an atmospheric air intake port 56 shown as protected by a screen 57. On opposite sides of the plane of the ports 51, 54 and 56, the cylinder 40 is provided with secondary atmospheric ports 5858 and with secondary suction ports 59-59. The suction or vacuum ports 59-59 are connected to the main suction nipple 52 or other suitable portion of the main suction conduit, by small conduits 60 that are adapted to be opened or closed, or, in other words, choked off more or less by independently adjustable valves. These valves 61, as shown, are of the needle valve type, have threaded engagement with the interior of sleeves 62 on the cylinder, and, as shown, have knurled heads 63 with split sleeves that frictionally engage the sleeves 62. As shown, the outer ends of the conduits 60 are closed by plugs in the form of short screws 64.

In the present type of pulsator, the piston 65, that works within the cylinder 40, is mounted for reciprocatory and oscillatory movements within said cylinder and is provided, at the intermediate portion of its under side, with a main air port 66 and, on opposite sides of said main air port, with longitudinal secondary air ports 67-68 and 67 *68*. The main port 66'is a blind port, that is, a port that is simply a notch or a pocket formed in the piston. The secondary air ports 6768 and 67 -68*, however, are inconstant communication with the ends of the cylinder, through axial passages 69 formed in the piston.

The main port 66 is of such length that.

V in all longitudinal movements of the piston,

it is capable of registration with the main cylinder ports 51, 54 and 56, provided it is turned or rotated to the proper position. The secondary ports 6768 and 67 68 are of such length that they are always capable of registration with the cooperating ports oil that may accumulate in the bottom of the cylinder will, by suction, be drawn into the port 51 and will run into the oil trap or cup 7 6 and, hence, will be prevented from getting into the milk can.

The check valve 7 9 will float or be raised at'least part of the time, while the machine is in operation, but will close and prevent air from flowing into the can through the port '58. Air will be drawn from the milk receptacle or pail to maintain the proper partial vacuum therein, through the port 78, passage 80 and port 51 and from thence through the nipple 52 and suction pipe 53 to the vacuum pump or tank.

In Fig. 13, a modified form of oil trap is shown. Here the oil trap is in the form of a chamber 76 formed in the base ll of the pulsator, and the bottom of said oil trap is formed. by an annular plug having raised air-tubes 80 The above described manner of making and assembling the air tube coupler headand milk tube coupler head is highly important. Not only is such construction capable of being easily made but it is highly efficient in action and capable of being quick- 1y taken apart, cleaned and sterilized.

The arangement of the oil distributing pads or packings in the pulsator piston not only gives the desired Slow distribution of oil for a very long period of time, but makes it practical to use a piston that does not tightly fit the cylinder. The arrangement of one longitudinally extended pad or packing on each side of a vertical plane through the axis of the piston, insures even lubrication at both sides of the cylinder and piston.

As a novel feature of the present invention, it will be noted that the suction pipe or tube for maintaining partial vacuum in the milk pail or receptacle is connected to the latter through a conduit in the base of the pulsator and said conduit. is provided with a check valve. This check valve, in

the preferred arrangement, is seated in the pail cover and access thereto is afforded by removal of the pulsator. As another important novel feature, it will be further noted that, in this improved arrangement,

the speed of the piston is controlled by reg- I ulation of the vacuum or suction as distinguished from regulation of the atmospheric 7 air supply. This is accomplished by adjusttion Withcertain of thecylinder ports and has a downwardly extended conduit adapting it for connection to the interior of a milk receptacle, certain of the cylinder ports being arranged for connection to teat cups, and a suction pipe connected to the recess of said base.

2. A pulsator comprising a cylinder and a piston having co-operating ports and means for reciprocating said piston andfor oscillating the same at the limits of the pistons reciprocating movements, a suction pipe connected to certain of the cylinder ports, said pulsator having a base with a conduit through which said suction pipe is arranged to be connected to the interior of a milk receptacle, and a check valve in said conduit in the base of said pulsator, and certain of the cylinder portsbeing arranged for connection to teat cups.

3. Ina milking apparatus, the combination with a milk receptacle having a cover, of a pulsator comprising a cylinder and a piston having cooperating ports and means for reciprocating said piston andfor oscillating the same at the limits of the pistons reciprocating movements, a suction pipe connected to certain of the cylinder ports and certain other cylinder ports beingarranged for connection to teat cups, said pulsator having a base 'detachably connected to said cover and said base having a. conduit through which said suction tube is connected to the interior of the pail.

i. In a milking apparatus, the combination with a milk receptacle having a cover, of a pulsator comprising a cylinder and a piston having co-operating ports and means for reciprocating said piston and for 0scillating the same at the limits of the pistons reciprocating movements, a suction pipe connected to certain of the cylinder ports and certain other cylinder ports being arranged for connection to teat cups, said pulsator having a base detachably connected to said cover and said base having a conduit through which said suction tube is connected to the interior of the pail, and a check valve in said conduit in the base of said Pulsator.

5. .A pulsator comprising a cylinder anda piston having co-operating ports and means for reciprocating said piston and for oscillating the same at the limits of the pistons reciprocating movements, a suction pipe connected to certain of the cylinder ports, said pulsator'having a base with a conduit through which said suction pipe is arranged to be connected to the'interior of a milk receptacle, and certainof the cylinder ports being arranged for connection to teat cups, and an oil trap in the base of said pulsator, said cylinder having port leading down ward thereto.

6. In a milking apparatus, the combination with a milk receptacle having a cover, of a pulsator comprisinga cylinder and a piston having co-operatingports and means for reciprocatmg said piston and for OSOll- .lating the same at the limits ofthe pis-- tons reciprocating movements, a suction PllJGQOIlIlGCtQCl to certain of the cylinder ports and certain other cylinder portsbeing arranged for connection to teat cups, said pulsator having a base detachably connected to said cover and said basehaving a-conduit through which said suction tube is connected to the interior of the pail, acheck valve in said conduit in the base of said pulsator and an oil trap in said conduit located a ove said check valve, said cylinder"having an oil port leading downward thereto. 1

7. In a milking apparatus, the combina- 7 tion with a milk receptacle and a cover therefor, said cover'having a port and an up wardly opening check valve co-operating therewith, a cup-like oil trap applied to said cover and overlying said check valve, a pulsator having a base enclosing said oil trap and detachably appliedto said cover, and

. with said milk recepta I a suction tube'having connections for operating said pulsator and having a connection.

valve-equipped port;

, 8. A pulsat-or comprising a cylinder and a piston havlng co-operatmg ports, certain of which open to the atmosphere and certain of "which open to a source of partial vacuum, and check valves applied to the cylinder structure in the ports connected to the source of suction, whereby the speed of the piston may be controlled by the regulation of the action of the suction or partial vacuum thereon.

9. In a milking apparatus, the combina- I ,tion with a milk receptacle having a cover,

and a pulsator comprising. a cylinder and co-operating piston having co-operatingv ports, a suction pipe connected to certain of the cylinder ports and provided in such connections with choke valves applied to the ole throughsaid check cylinder structure in the ports connected to the source of suction for regulating the pipe connected to certain of the cylinder ports, certain of the cylinderports being open to the atmosphereand certain other cylinder ports being arranged 'for connecton, means. for oscillating said piston at the limit of its reciprocating movements, a pallcover affording a base upon which said cylinder and suction pipe are mounted, and

the latter having a port that opens through 1 said cover, said .port having an upwardly closing checkvalve; and. an. oil trap above said check valve. c

11'. A pulsator comprlsing a cylinder and piston havmgco-operatmg ports and means for reciprocating said'piston and for oScillating thesame, a {suction tube, said cyhnder having three centrally located fports,

one connectedto said suction tube, anotherto ,theatmosphere and the other having teat cupconnections, and sa d plston having :t'single centrally located port operative by oscillations of the piston to alternately connect saidfteat cup connected port with said atmosphere port and withv said suction port. a a a 12. A. cylinder and co-operating piston,

saidcylinder. having an upp'eroil supply passage and a lower oil discharge passage,

and one of said members having an absorbent packing arranged for contact with the other-and located between said oil supply w e v I '85 and discharge passagef v v In testimony whereof I afiix my signature.

LAURITS DINESEN.

, tion to a teat cup, the said ports co-operating to produce reciprocations ofsaid pis- 

